Hoisting apparatus



I Jne 9, 1925. 1,540,751

F2. BENSON HoIsTING APPARATUS Fild Feb. 9, 1924 2 sxeetshget 1 BYMfdzym@ A TTORNEYS June 9, 1925. j 1,540,751 Y F. R. BENSON A HOISTINGAPPARATUS Filed'Feb. e, 1924 2 sheets-sheet 2 ATTORNEYS lax/@WMM clear,concise, and exact descriptiim.V

Patented June 9, 1925. i

UNITED STATES g 1,540,751 PATEN FRANK R'BENSON, OF KECOUGHTAN,LVIRGINIA,ASSIGOR T0 IVEWIORT NEWSYSHII# BUILDING & DRY DOCK COMPANY, .OF`'.NEYVIOBITDNEWS, VIRGINIA, A CORPORA- TION. OF VIRGINIA.

y Hors-True APPARATUS.,

Application meartruary 915924. 'sei-mind. 691,535.

To all whom t may concern:

` Be it" known that I, FRANK It. BENSON, a citizen of `the UnitedStates, Vresiding at Kecoughtan, county of Elizabeth City, State .ofVirginia, have invented certain new and useful Improvements in HoistingApparatus, of whichfthe following isa full,

My invention relates particularly to ap'- paratus for` hoisting andlowering aplurality of relatively movable parts selectivelyA Theinvention isu especially applicable toy rakes for' removing from waterracks "or screens any form of floating or submerged trash, mud and thelike, carriedagainst the same.A Y u H object of my invention isto'provide a rapid and efficient .means for mechanicallycontrollinga'rake of this character, ofsimple and rugged construction,and which reduces manual labor toa' minimum.

' Another object is to provide improved means for raising. two or morerelatively movable members in a predetermined manner. which means arearranged to lock and maintain said members in their raised positions. f

A further object of my invention Ais toY provide means forl loweringtwovv or more relatively movable members `in a predetermined manner. i i

VOther objects and purposes of my invention will appear in the course ofthe following specification 'in VwhichV I have shown my inventionembodied in concrete formi for purposes of illustration.

u In the drawings illustrating what I now consider the preferred form ofmy inven-l tion Y lis an elevationillustrating my invention as appliedto a rack rake, the structural details of the rack and` itsr adjacentstructure being omitted to .n simplify the drawings, i

Fig. 2 is al vertical sectional view of Fig. 1, `taken on the line 2 2thereof, an extra line being added toindicate the lrelative position ofthe rack,

rig. e 'is an enlarged detail View of` theV controlling brake memberandone of the clutches, taken on the line 3-43 of Fig. 5,

Fig. 4: visa view similar toFigl, illustrating the brake member and theother clutch, taken on line 4V4eof Fig. 5, and'l Fig. 5 is a verticalsectional view of one posite ends the drums trash racks-or screens,sothat .the lmovable parts may operate in a verticalv plane over therack in a manner readily understood. The frame 1 Vis provided atitstopf, with a suitable number of uprightsforl standards, 2, 3, 4, 5, inwhichis journaledv ashaft 6, having fixed thereon, r'eferably at its op-I and'8 respectiyely. The standardsl't, 5, are also designed to supporta motor 9, whichis arranged `to drive a4 clutch member`10,through asuitable train of reduction` gearsfindicated asa whole' by thenumeral-11. IA'cooperating clutch member 12, is secured to theshaft 6,but arranged kto move axially thereon. A

rivoli-Fica "of lthe winding .and the 'elutch members u lever'13,pivoted at 14 engagesthe clutch v member 12by which means the member 12may be caused toV engage the member 10, therebyestabli'shing a drivingyrelation between shaft 6 and motor 9 in a well under stood manner. Onthe shaft '6, and located preferably intermediate the drums 7, 8,l isloosely mounted a third drum 15. As shown in Fig. 5, the drum 15 isformed with a rim,

which I shall refer to as a brakeV drum 716',

yat one end', which formsa part of the brak,-`

ing or'v controlV mechanism. Intermediate its axisand said brake drum16, the drum`.15 is also formedwith a projection or stop `17, preferably`in the shapefof a raised segment, of a predetermined size'for'p'urposeshereVV inafter explained,-r` and best shownin F 3,

r`Adjacent' the" brake drum 1.6,: asimilar;

brakexdrum 18 is suitably fixedv o-ntheV shaft 6, having a similar sto-p19, best shown in Fig. 4. As `shown in Fig.l 5, themembers 16 and 18 areso arranged that their respec tive stops will engage so as vto form aclutch between said members. A brake-operating lever `20, is pivoted onthe vframe 1'at 21.' At one end,"the lever 2O is provided with 'aweight22,` and `at its opposite end with a handle or other operatingmember 23.' The brake drum 16 is engaged'vby a brake band 24, one end'ofwhichris suitably secured to the pin 21 on which` thelever 2O ispivotedas shown and` 5, 1 and theother modifications thereof *will suggeststhemselves to those skilled in the |`art without departing from thespirit `of. my invention, the scope of' which is set forth in theannexed claims; 1 l v `What I claim is i f l. In hoisting apparatus, arotatable shaft, a brake drum fixed on said shaft, a winding drumloosely mounted on said shaft, a brake drum fixed to' said windin'gdmm,andmeans for limiting the relative 'movement between said brake drumscomprising stops on each of said drums adapted -to engage with eachVother.

2. In hoisting apparatus, a rotatable shaft, a brake drum' fixed on saidshaft, a winding drum loosely mounted on said shaft, a brake drum fixedto said winding drum, means for limiting the relative movement betweensaid Vbrake drums comprising-,stops on each ofV said `drums adaptedltoengage with each other, a controlling member, and brake Vbands for eachof said brake drums con` nected to said member whereby the brakes may beapplied alternately.

3. In hoisting apparatus having a rotatable shaft, a braking devicecomprising a brak drum fixed on said shaft, a brake'drum loosely mountedon said shaft, means limiting the relative movement of said drums to apredetermined amount comprising stops on each of said drums adapted toengage with each other, a pivoted operating member, a brake bandoperatingupon said fixed brake drum secured at one end to a fixedelement and at its other end to said member on one side of thepivot'thereof, and a brake band operating upon said loose brake drumsecured at one end to said element and at its other end to said memberon the side ofthe pivot thereof opposite to which said first brake bandis secured.

4. Hoisting apparatus comprisingin combination a rotatable shaft, awinding drum fixed thereon carrying a clutch member,

mechanism adapted to beraised by said drum'7 a drum loosely mounted onsaid shaft having a cooperating clutch member,

mechanism connected with saidv latter drum raised by said drum, awinding drum rotathe movement of which is controlled by said drum, meansfor f alternatelyfbraking Vsaid clutch members,` whereby the 'positionsof both of said mechanisms may be controlled.

5. Hoisting Y apparatus comprising in combination a rotatable shaft,means -for rotating the same, a winding drum fixed on said shaft,mechanism adapted to be tably mounted on said shaft, mechanism connectedtherewith, a brake drum and a clutch member carried by saidsecond-mentioned winding drum,a brake drumflxed on said shaft andcarrying a cooperating clutch member, whereby the relative movement ofsaid winding drums and the mechanismsnf. connected therewith arelimited, brake# bands associated withY saidy brake drums, andlmeans forlapplying thebraking forceexerted byy said bands selectively-betweensaid brake drumsf; f

6.1.Hoisting apparatus for a rack rake comprising in combination arotatable shaft, a Ymovable structure having arake pivoted theretonormally: vin'a-evertical position, a

f second movable `structure `having connections witlipsaid rake to placeitin ahorizontal position when such structure 1s raised and thereafterraise said first mentioned 'structure with itself, means on said shaftshaft for raising said first frame, and means Von said shaft forlowering the second frame independently of saidfirst frame apredetermined distance, and [a clutch on said shaft arranged to holdboth frames in a given osition. Y

8. oisting apparatus for a vrack rake comprising a rotatable shaft, awinding drum fixed thereon, ayframe arranged toy move verticallyconnected with saidV drum Y having a stop, a' winding drum looselymounted on said shaft, a second frame arranged to move verticallyconnected t0 said loosedrum, having a rake hinged thereto adapted toswing from a normal vertical to a horizontalposition, and a shoulderadapted to be engaged by the stop Vwhen the first mentioned frame israised, aconnection between said first frame and said rake whereby thelrake is swung toa horizontal position when the first frame is raised, abrake drum fixedto said loose windingdrum, a

brake drum adjacentgthereto fixed on said shaft, means limitingtherelative movement ,y

of said brakerdrums to a predetermined amount` van operating member forsaid' brakev drums, and brake bands connecting said brake drums with'saidmembenV 9. Hoisting apparatusA for av rack rake comprising incombination a vertically movf able structure having a rake hingedthereto adjacent its base, a second vertically movmove it about itshinges, means for limiting the relative movement of said structures, a

rotatable shaft, means for raising' and`l lowering saidv v'second-mentioned Vstructure able structure connected with Vsaid rake` toas the 1 Shaft is: rotated, a member vllotatfably mounted onsaiclrsliaft anclconneotecl to Said rstfmentioned structure', means forIexerting a braking yforce seleetively upon vsaid shaft or said member;4and V'meanston lli-miting the relativerotation of said member withrespectlto saiclsha-t 'A Y l0'. VHoisting apparatus for a rack rakecomprising in 'combination V`a rotatable shaft, a movable structurehaving a rake secured thereto, second movable" struc'- ture. having,Connections with said rake to mote-its teeth. into :position for rakingupon movement oysujCh structure amil` thereafter to move saidlfirst-mentoned with itself, means on said shaft for -moving thesecond-mentioned structure and means on Asaid shaft forholdin'g bothstructures in a given positionand first lowering structure the second'structure thereby moving vthe 20 rake teeth towardstheir originalposition.

FRANK .Rf BEN-SON.

